volvo low oil pressure alarm when (if) suddenly going to idle

V

virre

New Member
Joined
29 Nov 2008
Messages
7
Visit site
Hi
Got a (for me new) Volvo Penta D1-30
If you have used it for at least one hour in cruise speed and then suddenly changes to idle it will sound the low oil pressure alarm.

I found that there has been a small leak from the throttle (of all places) ...it is just a matter of a couple of drips. Otherwise I cannot find anything but that the oil seems that it might, just might have a too low viscosity.
It is newly served by a professional and there shouldn't be anything wrong
...but it is saturday and I dont really feel like waiting until monday and asking the same person again - it would be good with a second opinion.

anyone got some ideas what it might be?

regards
 
Mine is doing the same.
I cure it by puting it up to a higher rev (about 1000-1100 RPM) for a few minutes until I shut it down at the end of the sailing.
Maybe we'll learn something here from the VP pro's?
 
pheran said:
Does the alarm come on and stay on or does it just give a momentary 'bleep'?
Click to expand...

Well haven't had the guts yet to let it run for more than 20 sec or something when the alarm is on. Not a bleep in other words.
And as I said only when hot and if I abruptly turn it into idle .. I usually is more gentle but experienced it first time when I had to slow quick.


The leak was a gasket under the throttle which probably was not thight enough ... thigthened it a bit will check tomorrow if the little little oil leak is gone.
 
virre said:
Otherwise I cannot find anything but that the oil seems that it might, just might have a too low viscosity.
It is newly served by a professional and there shouldn't be anything wrong
...but it is saturday and I dont really feel like waiting until monday and asking the same person again - it would be good with a second opinion.
Click to expand...

You need to find out what oil has been used in the service. It sounds like the sump may have been filled with a low viscosity, maybe a 10W/30 or even lower, oil. This may also mean that it is a synthetic and therefore a high API rating.

See my website for more information on this subject.
 
solar said:
Mine is doing the same.
I cure it by puting it up to a higher rev (about 1000-1100 RPM) for a few minutes until I shut it down at the end of the sailing.
Maybe we'll learn something here from the VP pro's?
Click to expand...

This sounds like the oil pressure relief valve is sticking and remaining in its wide open position when the oil flow has reduced due to lower rpm. Perhaps in the course of running it for a short while at lower rpm it returns to its correct position.
 
Many thanks for your answers :-)

Yes even though there should be completely new oil in I am planing to change it myself to now for sure.
Then go for the pressure relief valve - is that doable by yourself? where to find it then?
 
23336.jpg


The relief valve is number 16 so presumably readily removed for inspection.

A number of sailing websites have reports of problems with oil pressure warnings following a quick drop in engine speed for the D1-30. The only reported solutions appear to have been new engines under warranty which doesn't really get to the source of the problem unfortunately.
 
virre said:
Hi
Got a (for me new) Volvo Penta D1-30
If you have used it for at least one hour in cruise speed and then suddenly changes to idle it will sound the low oil pressure alarm.

I found that there has been a small leak from the throttle (of all places) ...it is just a matter of a couple of drips. Otherwise I cannot find anything but that the oil seems that it might, just might have a too low viscosity.
It is newly served by a professional and there shouldn't be anything wrong
...but it is saturday and I dont really feel like waiting until monday and asking the same person again - it would be good with a second opinion.

anyone got some ideas what it might be?

regards
Click to expand...

Have you checked your tickover speed. It should be 850rpm +/- 25 rpm if I recall correctly. If tickover is too low the oil pump will not produce sufficient flow when the oil is hot and pressure will drop. Alternatively if the oil viscosity rating is too low the same will happen, as already mentioned. It could be pressure regulating valve or oil pump or but it's easier to check these things first.
 
You must log in or register to reply here.

Other threads that may be of interest

N
Volvo Penta Alarm Module/Alternator Issues
Replies
1
Views
172
superheat6k
superheat6k

Share this page

Top